Air-draft motor.



.CHARLES KAPPEL, OF CHICAGO, ILLINOIS.

AIR-DRAFT Moron. v

Specification of Letters Patent. Patented Nov. 12, 1918.

` appncauon'eied rune 11,1917. semaine. 173,918.

To all wt'om it 'may concern:

Be it known that I, CHARLES KAPPEL, a citizen of the UnitedStates, residingat Chicago, in the county of Cook andV State of Illinois, have invented new and useful Improvements in Air-Draft Motors, of which the following is al full, clear, and exact description.

My invention relates to motors, and particularly to an air draft motor. Y

The object of my invention is to utilize the atmospheric pressure of the draft of air, which always exists in open chimneys or airshaft or similar vertically disposed air passages, to rotate one or more air-rotors, and to thus produce a motor the expense of running which costs nothing and the motive power for which can be procured anywhere. The following is a full, clear and exact description in which reference is had to the accompanying drawings, in which latter Figure l is a vertical longitudinal central section of my invention.

Fig. 2 is a horizontal section thereof taken on the meandering dotted line 2 2, Fig. l.

Referring to the drawings, A represents a longitudinally elongated chamber which is, preferably, rectangular in cross-section and has the lower half of the front of which closed by a front wall a, and the upper half of which is open, so as to provide an inlet B to said chamber, which latter is otherwise closed, except at its rear where it has a chimney C arising therefrom. The upper edge of front-wall a is provided with a groove b extending from side to side of chamber A, and the vertical sides of inlet B of the same consist of vertical frames c, c, that are provided with vertical grooves for the reception and guidance of the side edges of a vertically movable door or gate D, which latter is shown in its raised position in Fig. 1 of the drawings, and which, when lowered to close said inlet, has its lower edge seated in groove b of the front-wall.

Between inlet B and chimney C, chamber A has two transverse shafts E, E, journaled in suitable bearings in the side-walls thereof, and each of these shafts has corresponding air-rotors mounted thereon that consist of corresponding equi-distant arms c, e, radiating therefrom, and blades f, f supported by said arms parallel to the axes of said shafts. The perimeter described by said blades is slightly less than the height of chamber A, and the lower half of said perimeter iscut` off from'the draft by'av transverse trough F -under the air-rotor nearest inlet B, and by the'wall of said trough interposed and arising between said air-rotors. f

There may be one. or a plurality of air rotors in chamber A, according! to' conditions' and the power it is desired to generate, and it is obvious that said rotors may be constructed as shown and described, or in any other way. Where there is a plurality of them, the shafts of these rotors are, preferably, extended through their bearings in the side-walls of said chamber at one end and provided with means for connecting them. But this is not essential as the motion of each shaft may be utilized independently of the other, if desired.

I prefer to use the draft or current of air that enters inlet B to drive the rotors not only in chamber A but also in chimney C, and in order to accomplish this result, I prefer to provide said chimney, at a point above where it is connected to chamber A, with an offset .chamber G and to journal in the side-walls of this chamber G a shaft g, which has corresponding equi-distant arms radiating from each end thereof, to which are connected blades H that are disposed parallel to the axis of said shaft. The rotor thus constructed has the end of its shaft g extended through its bearings and provided with a suitable sprocket c that is connected by a chain K to corresponding sprockets on the extended ends of shafts E, E, thus utilizing the upward draft ofair on all of the rotors before it passes out of chimney C. One or several air rotors, similar to that mounted on shaft g, may be placed in the chimney in such manner as to be engaged by the upward movement of the air currents therethrough, according as desired, but I prefer to use the one chimney rotor, as shown and described.

In operation, when door D is raised so as to open inlet B, the draft of air will enter chamber A and revolve the air rotors in the same, and as said draft arises through the chimney, or equivalent air shaft, it will engage any air rotors that may be placed therein, in such manner that its blades or vanes will be acted upon by the passing draft and rotated. All disposition of air rotors within the lower chamber from which the chimney or air shaft arises and in the chimney itself which utilizes the said draft or air currents, l consider as coming within the scope of my invention.

`What I claim as new is:

An air motor comprising a structure having a horizontally disposed. inlet opening at one end and a vertical air-shaft arising from the other end, a door for closing, said inlet opening, a plurality of air rotors, transverse shafts therefor journaled in and having one lo end extending through bearings in the walls of lthe chamber, a wall interposed between the lower portions of the perimeters of said rotors whereby the upper portions of said rotors alone are engaged by the draft of air through said chamber, and a corresponding 1 5 rotor in the chimney and transverse shaft therefor one end of which extends through its bearings in the walls of said chimney structure, and means connecting the same with the extended ends of the shafts of the 2e rotors in said chamber.

In witness whereof I have hereunto set my hand this 4th day of June, 1917.

CHARLES KAPPEL.

Witnesses:

FRANK D. THOMASON, FLORENCE MITCHELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

